Researchers at the University of Glasgow found that couples put on 2.5kilograms on average during the first year of marriage - while those who move in together pack on the pounds even faster (2kgs in just three months.)

Catherine Hankey, the nutrition and dietician who led the study, puts this down to the fact that mealtimes often double as bonding sessions.

“When people get married or cohabit, food can become central to the relationship as couples share meals and treats like food and drink,” she told the Sunday Times.